White Birch Lake

White Birch Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Vilas County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 20 puts White Birch Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. The lake bottoms out at 27 ft — a moderate depth that supports a warm-water fishery without the year-round cold refuge a deeper basin provides. White Birch Lake covers 113 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. White Birch Lake ranks 21 of 202 in Vilas County, putting it in the upper tier of locally monitored lakes.

No invasive species are currently listed at White Birch Lake — the lake remains off the Wisconsin infested-waters roster. The fishery includes walleye alongside the lake's other 5 documented species — a notable draw for Wisconsin anglers. Public access is available — the lake is on the Wisconsin DNR public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.